In one sentence
If you have ever withdrawn USDT from an exchange, you have probably seen the “TRC-20” option: that is USDT on Tron. DeFi on Tron is not large, but for moving stablecoins it is one of the most-used chains in the world: it holds $93.03B of USDT, the most of any chain on this site.
Where it came from
- 2017: Justin Sun founded TRON and sold TRX in an ICO. At the time TRX was just a token on Ethereum.
- 31 May 2018: Tron mainnet launched; in June the token migration finished and TRX moved to its own chain. The same year TRON acquired BitTorrent.
- 2019: Tether began issuing USDT on Tron. Fast transfers and low fees soon made it the most common USDT rail between exchanges and in over-the-counter trading.
- 2024: Tron, Tether and the analytics firm TRM Labs set up the T3 Financial Crime Unit to trace and freeze USDT linked to crime.
Who produces blocks: 27 Super Representatives
Tron uses DPoS (Delegated Proof of Stake):
- TRX holders stake to get votes and cast them for candidates.
- The top 27 by votes become Super Representatives and produce blocks in turn, one every 3 seconds. The list is updated from the latest votes every 6 hours.
- Once more than two-thirds of the Super Representatives have confirmed a block it cannot be rolled back, usually within a minute.
There are 445 registered candidates, of which 27 actually produce blocks. Measured block time is 3.00 s.
- 01Signed and sent
The wallet signs and sends it to a node. Sending USDT calls a contract, which consumes "energy".
Instant - 02Resources deducted
The account's own bandwidth and energy are used first; if not enough, TRX is burned to cover it.
- 03Super Representative produces
The Super Representative whose turn it is packs the transaction into a new block.
About 3.00 s per block - 04Others confirm
Later Super Representatives build on top of the block, effectively confirming it.
- 05Irreversible
Once more than two-thirds of Super Representatives have confirmed it, the transaction is "solidified".
Within a minute
Bandwidth, energy and TRX
Tron has no gas price like Ethereum. Instead it charges in two “resources”:
- Bandwidth: ordinary transfers (such as sending TRX) consume bandwidth. Each account gets a little free bandwidth every day, enough for a few TRX transfers.
- Energy: calling a smart contract consumes energy. Sending USDT is a contract call, so it needs energy.
Resources come from staking TRX (the more you stake, the more resources regenerate each day), or, without staking, from burning TRX to pay. Many people sending USDT for the first time notice “several TRX deducted”: the account had no energy, so the system burned TRX. There are also services that rent out energy.
So Tron’s daily on-chain fees ($890K) come mainly from TRX burned on USDT transfers, among the highest of the chains on this site. About 95B TRX are in circulation, a market cap of $31.66B.
What is on-chain today
- USDT 98% $93.03B
- USDC 0% $27.9M
- Other 2% $1.54B
Sources: CoinGecko (market cap, supply), DefiLlama (TVL, stablecoins, DEX volume, fees, protocols), measurements from public nodes (block time, validators).
Things worth noticing:
- Almost all USDT: stablecoins on the chain total $94.6B, with USDT at 98%.
- DeFi is concentrated in one ecosystem: the leading protocols by locked value, such as JustLend, SUNSwap and USDD, are all closely tied to the TRON founding team.
- DEX volume is small: 24-hour DEX volume is only $74M. Money on this chain is mostly being moved, not traded.
Strengths and trade-offs
- Fast, reliable USDT transfers: 3-second blocks, and almost every exchange, wallet and OTC desk supports TRC-20.
- Accounts that stake TRX transfer very cheaply; frequent senders can cut costs by staking or renting energy.
- EVM-compatible, so Ethereum contracts can be deployed with small changes.
- Only 27 Super Representatives produce blocks, and voting power is concentrated among a few large holders and exchanges.
- The ecosystem leans heavily on the founding team; the main protocols and the USDD stablecoin are linked to it.
- Because USDT is plentiful and easy to move, fraud and money laundering also use Tron heavily; Tether freezes USDT at addresses linked to crime.
- 01
Make sure the USDT you received is the official contract (issued by Tether). Tron has many fake tokens also called USDT.
- 02
Watch out for "address poisoning": scammers send you zero or tiny amounts from an address with the same start and end as one you use, hoping you copy it from your history next time. Check the full address every time.
- 03
Is the project's token contract verified on Tronscan, and does it have mint, blacklist or pause permissions?
- 04
Think before approving an unknown contract. Approvals on Tron work like Ethereum's and can be used to move your USDT.
- 05
If a large amount of USDT has an unclear origin, check first whether it has touched frozen or crime-linked addresses, so your own funds are not frozen with it.
Data and sources
- Live figures: CoinGecko, DefiLlama and TronGrid public nodes (measured block time, the Super Representative list).
- Mechanisms are based on the official TRON developer documentation.
- This guide is educational and is not investment advice.
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